{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe70a00a9b903f8c4c8e9ac762f71fa9047f0d416502c9bdf8e13260ddf6e9249",
    "signature": "0xd57a6ec70ddb0d5215fc9d6d6e43d7a64bb715041241222d5177a6b9473ab73a1ef8137357176890e0a3613ced3e1aa71644bd1964cf4d7f81f3cca91d2ef55c1c",
    "signer": "0x9B5FC7AD63009742c0592d3BFfFc7ac6D255e0cF",
    "userId": "420043742"
  }
}